Greenhouse manual crank film winder

Greenhouse manual crank film winder is a labor-saving hand-operated ventilation device specially designed for sidewall and end-wall film rolling of single-span hoop houses and small and medium-sized commercial greenhouses.As a core manual ventilation component,it replaces traditional manual film lifting methods,allowing growers to freely lift,lower and fix greenhouse plastic film through simple cranking operation.It realizes precise adjustment of greenhouse ventilation volume,internal temperature and humidity,solving the problems of time-consuming labor,unstable fixation and uneven film opening in traditional ventilation work.It is one of the most essential and cost-effective greenhouse environmental control accessories for small-scale planting farms and non-powered greenhouse areas.

The whole machine adopts high-strength die-cast aluminum alloy shell and galvanized steel transmission parts.The precision internal gear set is processed by high-precision hobbing technology,featuring tight meshing,smooth transmission and strong wear resistance.All metal parts are treated with anti-rust and anti-corrosion treatment,which can adapt to long-term high humidity,high temperature and ultraviolet radiation inside and outside the greenhouse.It will not rust,slip or age easily in humid farm environments,ensuring stable mechanical performance and long service life.The ergonomic anti-slip crank handle is comfortable to grip and effectively reduces cranking resistance,realizing labor-saving operation.

This manual film winder is equipped with an integrated self-locking brake device,which is the core functional advantage of the product.During operation,users can stop cranking at any height,and the built-in self-locking structure can firmly fix the film rolling position without sliding down or automatic falling.It maintains stable ventilation opening all day long,avoiding repeated adjustment work.With a scientific gear reduction ratio,the device greatly saves manual force,allowing one person to easily complete the rolling and lowering of large-area greenhouse film.The standard reserved interfaces are highly compatible with common greenhouse film rolling pipes and rack bars on the market,with simple and fast on-site installation without complex wiring or power supply configuration.

Practically designed for agricultural planting scenarios,the manual crank film winder supports long-distance film rolling with a maximum rolling length of up to 80–120 meters,meeting the ventilation needs of most standard greenhouses.It can flexibly adjust the film opening degree according to weather changes and crop growth stages,effectively promoting internal air circulation,discharging excess heat and moisture,reducing crop fungal diseases caused by high humidity and stuffiness,and improving crop growth quality and yield.The compact and lightweight structure is convenient for transportation,installation and later maintenance,with extremely low failure rate and no daily maintenance cost.

Widely applicable to vegetable hoop houses,flower planting sheds,seedling breeding greenhouses and agricultural temporary planting sheds,the greenhouse manual crank film winder is especially suitable for greenhouses without power supply or scenarios requiring low-cost ventilation transformation.With reliable performance,simple operation and high cost performance,it has become a popular standard ventilation accessory for small and medium-sized greenhouses worldwide,helping growers realize scientific and efficient greenhouse environmental management.